Originally Posted by
fratboy
To me this suggests that LH are pretty hardcore about people buying tickets in a third territory and using it from the transit point.
Buying tickets in a third territory and using it from the transit point will result in the relevant out- or inbound journey being either void or repriced. This is pretty obvious because the fares in different markets differ.
There were times when CAI First Class fares via FRA to the far east were about 1/3 of the price ex FRA. LHR First Class fares via FRA are still cheaper than First Class fares ex FRA. The same is true for other markets.